Priming-cup



0. w. BECK.

. PRIMlNG CUP.

'APPLiCATlON FILED DEC.29,1917.

1,380,345 Patented June 7,1921.

. VIII. 1-1

W mm (l nen W135 "in the lower part of PATENT OFFICE.

CHARLES W. BECK, 0F DETROIT,.MICHIGAJ.\T.

PRIMING-CUP.

Specification of Letters Patent.

Patented June '7, 1921.

Application filed December 29, 1917. Serial No. 209,395.

To aZZ whom it may concern:

Be it known that I, CHARLES IV. BECK, a citizen of the United States of America, residin at Detroit, in the county of Wayne and btate of Michigan, have invented certain new and useful Improvements in Priming-Cups, of which the following is a specication, reference being had therein to the accompanying drawings.

This invention relates to priming cups and refers more particularly to priming cups as are used in connection with automobile, marine and other internal combustion engines. I

The invention resides in the provision of a, priming cup which can be economically manufactured; in a constructionin which the valve will readily center itself upon the valve seat; and further in certain novel features of construction and arrangements of parts as will more fully hereinafter appear.

In the drawings:

Figure 1 is a side elevational view partly in section, showing a priming cup embodying my invention;

Fig. 2 is a cross-section on the line 22 of Fig. 1; I

Fig. 3 is a top plan view, partly in section, on the line 33 of Fig. 1;

Fig.4 is an enlarged perspective view of the insert;

Fig. 5 is a vertical sectional view through a modified construction of valve.

Describing in detail the construction shown in the drawings and referring-first to Figs. 1 to i inclusive, A designates the main body portion or casing of the priming cup which at its lower end is externally threaded at B so that it can be threaded into the opening in the cylinder or the like. At

its upper end the priming cup has an enlarged chamber C which receives the gasolene or other fluid for startingthe engine. The passage of the priming fluid from the chamber C of the priming cup into the engine cylinder or the like is controlled by a valve governing the passage of fluid through the port of thevalve seat E formed the casing A. The stem of this valve has a handle portion F which is provided with threads G which engageT a threaded opening in the insert member In both the constructions shown in Figs. 1 and 5 the insert member which has a threaded opening engaged by the threads of the valve stem is formed as a separate piece which, after being positioned in the casing, is secured in position by suitable lugs. By forming this member as a separate piece insertible after the casing is formed, the latter can be made of sheet metal in the ordinary way of stamping. In stamping" the cup the threaded end thereof is v turned or upset so as to provide the valve seatE. The insert member which preferably has its outer sides corresponding to the configuration of the inner wall of the central portion C of the casing is then pushed into place and locked by any suitable means, such as by striking down the lugs 0 from the inner walls of the casing.

In order that the valve will readily center itself upon the valve seat, I preferably form valve toits seat the rotary movement given to the valve stem will, through the action of its threads on the internally threaded portion of the bushing cause the valve to be forced toward its seat, while the lateral play permitted by the elongated slot I will allow the valve to automatically center itself upon the valve seat.

In the modified construction shown in valve stem s provided by making the engagement between the threaded portion G of the stem a loose fit with the threaded opening in the insert member In this construction the bushing is omitted and this loose engagement between the threaded portions utili-zed to permit the proper centering of the valve upon the seat. In both constructions the insert member is shown as provided with flat faces L which fit against theflat inner faces ofthe' casing A, while recesses M are provided for allowing the passage of the priming fluid downward below the insert member. Various changes in the details of construction and arrangements and Fig. 5 a limited movement for centering the 9 nally combinations of parts can, however, be made without departing from the scope o my invention.

What I claim as my invention is 2- 1. A priming cup comprising a main body portion, the interior walls of said portion being polygonal in shape, a valve seat, a valve, a threaded stem for adjusting said valve with reference to its seat, and an insert member inserted within the polygonal walls or said main body portion and having an opening through which the threaded stem extends, the engagement between the insert and the valve stem being aranged to per mit the valve to automatically center upon its seat. 7

2. A priming cup comprising a main body portion having a valve seat, a valve, a threaded stem for adjusting ward and from its seat and an insert member secured in said casing and through which the threaded stemlextends, said insert having an internally threaded bushing member through which said stem extends.

A priming cup comprising a main body portion havin a valve seat, a valve, a threaded stem ror adjusting said valve toward and from its seat and an insert member secured in said casing and through which the threaded stem extends, said insert memher having a laterally movable bushing with which said threaded stem engages.

4. A priming cup comprising a main body portion having a valve seat, a valve controlling said seat, a longitudinally adjustable stem for actuating said valve, and a bushing having a screw-threaded engagement with said stem, said i have a limited lateral movement to permit the valve to properly adjust itseltt to its seat. 5, A priming cup comprising a main body portion adapted to receive a supply of priming fluid, a valve for controlling the discharge of said fluid from said main body portion,'a rotatable stem for said valve, and an insert .member provided with an interthreaded portion through which said stem is threaded so that rotary movement of the stem will adjust the valve toward or from its seat, and lugs extending inwardly tromthe main body portion acting to secure said insert member to the body portion.

6. A priming cup formed of sheet metal comprising a main body portion'having an integral valve seat portion formed at one end thereof, a valve, a threaded stem for said valve toend and a hollow portion or less bushing being mounted to adjusting said valve toward and from its seat, and a separate insert member fixedly secured in said casing and provided with a portion having a threaded opening through which the valve stem extends.

7. In a priming cup, a main body portion composed of a cup-shaped upper end and a hollow portion of less diameter than said cup-shaped portion, the end of said hollow portion being provided with an inwardlyextending apertured iiange, said body portion being formed of a stamping.

8. In a priming cup, a body portion formed of a stamping consisting oi: a cupshaped upper portion and a hollow portion of lesser diameter than'said cup-shaped portion, said hollow portion terminating an inwardly extending flange seat.-

. 9, A priming cup comprising a main body portion composed of a cup-shaped upper diameter than said cup-shapedportion, a valve, threaded stem for adjusting said valve toward and from its seat, an insert member, the periphery of said insert men her being cut away to form a passage tor the priming fluid and a projection on the body portion for retaining the insertmember in its s 10. In a priming cup. comprising a man body portion formed of sheet nietal'composed of a cup-shaped upper end and a hollow portion of less diameter than said cupshaped portion, a valve, a stem for adjusting said valve toward and from its seat, an insert member resting against the inner-wal of said hollow portion of less diameter and lug means for retaining said insert member.

11. In a priming cup comprising a main body portion formed of sheet to receive a supply of liquid, a valve, valve stem therefor, a member engaged with the body portion and adapted to carry said valve stem, and projecting means on the main body portion for retaining said member in engagement therewith.

12. In a priming cup, a body portion consisting of a cup-shaped upper portion'and a hollow lower portion oiilesser diameter than said cup-shaped portion, said hollow portion terminating at its extreme lower end in an inwardly extending annular flange forming a valve seat. f I

In testimony whereof I afiix my signature.

7 onianrns w. BECK.

annular llange forming a metal adapted 

